When a wealthy architect is killed in the family manor house he bought to refurbish, the rumors regarding the mansion's history of the occult and ghosts comes into play against the far more human motives of a hidden fortune.

Recap

Lillian Foster: I can't help thinking that if I'd stayed there, if I'd just gone and talked to Allan, he would still be alive.Simon: Mmmm. Most likely you'd both be dead.Lillian: Well, the way that I feel I might prefer that.Simon: That feeling will pass.Lillian: What do you know about that?Simon: Enough.

Simon is, of course, alluding to his own feelings and experiences of "survivor guilt" over the death of his wife and child at the hands of Red John.